A sample of 30.0 mL of krypton gas, Kr, is at 756 mm Hg and 25.0°C. What is the new volume if the pressure is decreased to 325 mm Hg and the temperature is decreased to -12.5°C?

Q: (ve

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Q: What are the equilibrium concentrations of Cu+ and Cl– in a saturated solution of copper(I) chloride…

A: copper(I) chloride = CuCl Ksp = 1.05×10—6

Q: In this figure, a polar stratospheric cloud (PSC) ice crystal is displayed. Chemical reactions that…

A: To write A and B reactions:

Q: वाह क्रण्ला उपलणणर जला कषट अच्पलिपट the For ळा्चनीयवं हवौवै- Phिवगर अभतजीच्य ह, what is the function…

A: We have to tell the function of the di-tert-butyl-dicarbonate in the Merrifield solid-phase peptide…

Q: What is the pH of a solution made by mixing 200.mL of 0.250 M HCI and 250.mL of 0.150 M HBr, and…

A: Given that -  Molarity of HCl = 0.250 M  Volume of HCl = 200 mL  Molarity of HBr = 0.150 M  Volume…

Q: (b) Determine the position of equilibrium H.

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Q: For one month Siera calculated her home town’s average high temperature in degrees Fahrenheit. She…

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Q: Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222…

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Q: HCO3- + HCl ==== H2CO3 + Cl- . Which one of reactants is an acid?

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Q: One of the most promising possibilities for commercial fusion is combining deuterium (amu 2.014102…

A: Here we are required to find the energy that would be given off by nuclear reaction

Q: Will the following reaction be spontaneous under standard conditions? Zn(s) + 2H*(aq) → Zn+2(aq) +…

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Q: explain to me why your answer is wrong and the answer is somewhat like this pls explain i don't…

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Q: A voltaic cell is 'constructed from a standard Mn2+ = -1.180V) and a standard I2 I half cell (E° Mn…

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Q: measures the solubility of Ca(NO3)2

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Q: For p=0.1, the activity coefficient (gamma) of M2+ is 0.41 while gamma of X-is 0.75. Calculate how…

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Q: Br2 NEIS A CH,Cl2 CH,BrO;

A: Reaction 1 : Bromine addition to olefin. Reaction 2 : E2 elimination.

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Q: Be sure to answer all parts. A freshly isolated sample of "Y was found to have an activity ofr 5.8 x…

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Q: Br Br > WHat kind oF (caalon is this? E2IE|SNI|SN2 1, MgBr 2. H20 Ho heat CH3 CH21 AIC13

A: Note : carbonyl compounds undergo nucleophilic addition reactions. 1,5-hexadiene undergo cope…

Q: Select all that apply. For each pair of isotopes listed, predict which one is less stable. (a) ÓLi…

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Q: 231.25 g/mol) is an Isocarboxazid (MW organic monoamine oxidase inhibitor used to treat depression…

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Q: e. Calculate the pH of a solution containing 50.0 mL of 0.150 M of benzoic acid after the following…

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Q: Determine which of the following pairs of reactants will result in a spontaneous reaction at 25…

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Q: An oil boils at a lower temperature when steam is added to it because: O the water dissolves in the…

A: We have to find the reason for why the boiling point decreases when steam is added to oil.

Q: 2) Rank the following molecules in order of increasing relative rate of SN1 reaction with methanol…

A: Please find the below attachments. If it helpful for you then please rate or let it be.   Thank you.

Q: List the following from lowest to highest first ionization energy. Cl, Na, K

A: Ionization energy : The energy required to remove the highest energy electron i.e.valence electron…

Q: What is the mass in grams of precipitate formed when 250.0 mL of 0.400 M ZnCI, is mixed with excess…

A: Given-> Volume of ZnCl2 = 250.0 ml Molarity of ZnCl2 = 0.400 M

Q: Q11. Provide a mechanism that leads to the major product: NO2 CH NH2 Br Q12. Propose a set of…

A: Q 11. Aromatic Sn2. Q 12. ( see below).

Q: How many grams of zinc metal will be deposited from a solution that contains Zn2+ minutes. ions if a…

A: I=0.785 amperes t=61.9minutes n = 2 w=ZIt = 65.3 × 0.785× 61.9 ×60 /2× 96500 w =0.986gm

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Q: You obtain a cell count of 4 x 105 cells/mL. Before counting, your cell suspension was diluted 1:5…

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Q: 3. Ammonia and phosphoric acid solutions are used to produce ammonium hydrogen phosphate fertilizer.…

A: Given-> Molarity of NH3(M1) = 14.8 M Molarity of H3PO4(M2) = 12.9 M Volume of H3PO4(V2) = 1000 L…

Q: Can you make a conclusion about this table?

A: A conclusion about the table is needed to be prepared.

Q: Write the formula and appropriate structure(s) for each of the following. a. potassium…

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Q: Consider the following chemical reaction and that H2SO4 is a strong acid: H2SO4 + H2O ==== HSO4- +…

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Q: Present the 3-membered ring pathway for the following reactions. + Cl2 Br CH3OH

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Q: Formulas of oxides only are given in a line: O a. N20, Li20, CO2 O b. N203, H2CO3, Al203 O c. NO2,…

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Q: Comment on the 'H-, 3"P- and 19F-NMR HPF2 spectra of (considering Jp.F > Jp.H, Jp-H >Jp.H).

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Q: Br Fe `F F omplex A whether each co of A, or an entire This com 13- O... the same Br O... an isome…

A: Answer : 1) first complex is the isomer of the complex A because in the complex A , Br atom is the…

Q: Which of the following is an omega-3 fatty acid? A) oleic acid B) palmitoleic acid C) linoleic acid…

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Q: B. Charles's Law Consider you have the set-up as shown Figure 2, where you 1. Half-fill a 400-mL…

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Q: Draw the Lewis structure of SO, (by following the octet rule on all atoms) and then determine the…

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Q: One of the most promising possibilities for commercial fusion is combining deuterium (amu 2.014102…

A: Given that, the commercial fusion is combining deuterium with tritium to form Helium-4 and a…

Q: Need to find percent recovery of crude caffine and purified caffine

A: Given that -  Mass of Caffeine in tea bags = 550 mg  Mass of Crude Caffeine = 109 mg  Mass of…

Q: 3. The pH of a 0.10 M HCN solution is 5.3. What is the [H*]? What is the [CN-]? What is the K?

A: Please find your solution below : pH is a measure of how acidic or basic a substance. It is defined…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.